u.s. president barack obama has called on gadhafi to step down, but he remains hesitant over creating a no-fly zone over the country. >> i want to make sure that those full range of options are available to me. the region will be watching carefully to make sure we're on the right side of history. >> in a news conference on thursday, obama said gadhafi has lost legitimacy to lead and he must leave. he said his departure would be good for libya and the people and he said the u.s. has sent military aircraft to air lift egyptians who have fled from libya to neighboring tunisia. earlier in the week, the u.s. senate unanimously passed a resolution calling on the united nations to impose a no-fly zone. the secretary of defense robert gates said taking control of the skies or other direct military action would have 0 its con consequences for u.s. interests, not just in libya but throughout the middle east. >>> meanwhile, france and britain say they will support the introduction of a no-fly zone. f